Which country has the highest CO2 emissions?

China has the highest CO2 emissions at 9.89 billion metric tonnes CO2 as of 2011.

Which country has the lowest CO2 emissions?

Niue has the lowest CO2 emissions at 3.42 thousand metric tonnes CO2 as of 2011.

The global total for CO2 emissions is 33.62 billion metric tonnes CO2 as of 2011.

1980

2011

Guadeloupe has the 147th highest CO2 emissions among 215 countries with data in 2011.

How does Guadeloupe rank globally for CO2 emissions?: Guadeloupe has the 147th highest CO2 emissions among 215 countries with data in 2011.
Which country has the highest CO2 emissions?: China has the highest CO2 emissions at 9.89 billion metric tonnes CO2 as of 2011.
Which country has the lowest CO2 emissions?: Niue has the lowest CO2 emissions at 3.42 thousand metric tonnes CO2 as of 2011.
What is the global total for CO2 emissions?: The global total for CO2 emissions is 33.62 billion metric tonnes CO2 as of 2011.

Year	CO2 Emissions	Energy Consumption Per Capita	Energy Consumption Per GDP
2011	2.51	—	—
2010	2.1	80.56	5.26
2009	2.1	75.44	5.18
2008	2.4	76.33	4.99
2007	2.44	81.85	5.4
2006	2.2	78.94	5.33
2005	2.1	76.28	5.27
2004	2	76.24	5.53
2003	1.9	77.56	5.71
2002	1.9	75.49	5.87

Source: U.S. Energy Information Administration · Updated March 2026